1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f4a5c5cb6c6da9f8d439e21de78df4b31a771388c6e1e1a03bbfac1741faf. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c50edb2d-4e36-4e50-917e-16b3fd066796.json and https://artists.proofprofile.net/proofs/artist/c50edb2d-4e36-4e50-917e-16b3fd066796.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Day After (Will I Be Free) [Remixes, Pt. 1]
The Day After (Will I Be Free) [Remixes, Pt. 2]
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32822262ea303c52fba44e6aaab24dce71bc15406d3ca401965823ff0bee2940. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54438f4e7dad62bbe32b48387f4ce931ff4fb239b67834f71882853954d6cbc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e54646b374edcfb981f568db96ef31a69d27f3cdc894f02300602f92dfbfa62. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e9bf0866ba046b744cbe3d26c5e398fa25743e21081dafa5b32aad0a8bf37. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4876ac4d7487911070e7389b98932644a465de68eeec699b90884084c0b79962. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f671f9c1fbeb18b2f3d20f01ce6d0f779b927ce32c5d8d4a5621d3dace757df. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fb42c1353506f1a1ad9d77e43609831ddc8c29205bfb0ceb6de0c598164584. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e7226ab2b0ab9c410f3990f3da964c41a924b82f315e6085084c8844b50e0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dd57aaecb55fa3252a5144ba066a1be44b3c44bfc711d72ab4caa64ed3b923. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d702afaf65e0dbed627f0e999406f4192d0d02257020801ec30d78cbcd8c9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7b72965c12630e96fb6c9bc1a76f3cd5da030302e5fb8d91c6ba5c4b51b3b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a78827911b4cb182775f45f0553147b045ee3559af6d2fe876ae39e7835d349. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1c1972455fde5982107156436ad40f5f21bd1fb331e57bcbc82e1664c20314. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbcf4fac62b641bf7c41a6ea90af45e245b429ef47bac0ac47e945c7293da07. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ff2df23279f47a63a74b54306b268d2fb7d54fae915902ed4e4606b3d1f848. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68795b789183176be1ee99869862224da7045134bc23561c88917dec681a3efe. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd663148c0310a180012df36ba3799693de98154760a714cedde37f455b44f3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f98599e065e92b906a7a264c07b149238ff2d1269de2b29686c4d9bd946bc. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199b45bb7a93babe66a2d2bb2721dbf2a7e72cd4adec9d5bbcf57fe87d1cdee0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aa685b31fb6503a3e754d1e053c7c661e079a647f8399de13778616b1f47a6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IL1012301997.